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1 Warm-up 8/21 4. What is the probability of rolling a 6 on a die? 5. What is the probability of rolling an even number on a die?
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Warm-up 8/21
4. What is the probability of rolling a 6 on a die?
5. What is the probability of rolling an even number on a die?
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Review
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Line Segments
Line segment are named with 2 points and a line segment symbol.
A Bex.
this is AB
this is AB has a length of AB.
The length of a line segment has no symbol above it. Just the 2 points.
Section: Segment Measures, Segment Addition
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Betweenness
with real numbers
same with points
Betweenness of Points
between any 2 points there is @ least one point between them.
Ex.
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A B C
Point B is between points A & C
What does that imply?
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Segment Addition Postulate
little + little = big
Example:L M N
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Find the length of LN.
part + part = whole
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Draw the Segments
Ex. Point B is between points A & C.
1. Point K is between point L & M.
2. Point H is between points F & J.
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1. 2.
Segment Addition Postulate
Find LN
L Q N43 13
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Segment Addition Postulate
Solve for the missing length.
1. 2.
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Congruent Segments
Congruent -
tick mark are used to show 2 segments are congruent.
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Segment Addition Postulate - Congruence
Ex.Geometric and Algebraic methods
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Segment Addition Postulate - Solving Equations
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Segment Addition Postulate - Solving Equations
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Segment Addition Postulate - Solving Equations
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3.
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NameNNMath Tech 3 Segment Addition Homework Mrs. Piotrowsky
Draw the described segments.
1. S is between D and P 2. J is between S and H
3. C is between Q and R 4. T is between M and N
In the diagram of collinear points, GK = 24, HJ = 10, and GH=HI=IJ. Find each length.
5. HI 6. IJ 7. GH
8. JK 9. IG 10. IK
Find QR in the following problems.
11. If RS = 44.6 and SQ = 68.4, find QR.
12. If RS = 33.4 and SQ = 80, find QR.
Suppose J is between H and K. Use the Segment Addition Postulate to solve for x. Thenfind the length of each segment.
13. HJ = 5x 14. HJ = 2x + 5 15. HJ = 6x 5 JK = 7x JK = 3x – 7 JK = 4x 6 KH = 96 KH = 18 KH = 129
16. HJ = 3x + 8 17. HJ = 4t – 15 18. HJ = 5p JK = 4x + 6 JK = 5t – 6 JK = p KH = 28 KH = 15 KH = 36
G H I J K
Name:________________________
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